Malicious PDF — malware analysis report

Static analysis result for SHA-256 874842df3701e3c7…

MALICIOUS

PDF

32.4 KB Created: 2021-06-18 20:38:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 19160a12992c3675815b34fff526861c SHA-1: 5814ca2e3cf0d6d0808a3f2c706f9688fde2e17e SHA-256: 874842df3701e3c7ec64d8f116e966ae8022bea287b1fc7dce53f91671975949
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to redirector infrastructure, specifically advertising 'free generators' and 'game hacks' for popular games like Roblox and Coin Master. The primary lure appears to be a link to 'red-shirt-roblox-free-game-hack' which is hosted on netcdn.co. The document body also contains a call-to-action phrase, reinforcing the deceptive nature of the content. The embedded URLs are designed to lead users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/red-shirt-roblox-free-game-hack In PDF document text
    • http://dygmotors.com.py/images/getrobux-now_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://dygmotors.com.py/images/how-to-hack-robux-in-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • http://dygmotors.com.py/images/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/how-to-car-music-hack-roblox-apocalypse-rising_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dygmotors.com.py/images/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • http://dygmotors.com.py/images/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://dygmotors.com.py/images/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dygmotors.com.py/images/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://dygmotors.com.py/images/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/pokemon-go-free-864_GM1094591345.pdfIn PDF document text
    • http://dygmotors.com.py/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/real-free-robux-games_GM431946152.pdfIn PDF document text
    • http://dygmotors.com.py/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2942 22184 bytes
SHA-256: db04f131f040e194488d1fb2d77ef0719c513620630ced27bb4432f70d5f33c3
font_01_sfnt_off000059cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59CB 19028 bytes
SHA-256: 674a7c6e34cb4d1697511816ba8247dfb08ebacc986deedf88f55c7f1f50e22d